Preference Discovery

Jason Delaney, Sarah Jacobson and Thorsten Moenig
Additional contact information
Thorsten Moenig: Temple University, https://sites.google.com/site/thorstenmoenig/

No 2019-08, Department of Economics Working Papers from Department of Economics, Williams College

Abstract: Is the assumption that people automatically know their own preferences innocuous? We present a theory and an experiment that study the limits of preference discovery. If tastes must be learned through experience, preferences for some goods may never be learned because it is costly to try new things, and thus non-learned preferences may cause wel- fare loss. We conduct an online experiment in which finite-lived par- ticipants have an induced utility function over fictitious goods about whose marginal utilities they have initial guesses. Subjects learn most, but not all, of their preferences eventually. Choice reversals occur, but primarily in early rounds. Subjects slow their sampling of new goods over time, supporting our conjecture that incomplete learning can persist. Incomplete learning is more common for goods that are rare, have low initial value guesses, or appear in choice sets alongside goods that appear attractive. It is also more common for people with lower incomes or shorter lifetimes. More noise in initial value guesses has opposite effects for low-value and high-value goods because it affects the perceived likelihood that the good is worth trying. Over time, sub- jects develop a pessimistic bias in beliefs about goods’ values, since optimistic errors are more likely to be corrected. Overall, our results show that if people need to learn their preferences through consump- tion experience, that learning process will cause choice reversals, and even when a person has completed sampling the goods she is willing to try, she may continue to lose welfare because of suboptimal choices that arise from non-learned preferences.

Keywords: discovered preferences; preference stability; learning (search for similar items in EconPapers)
JEL-codes: D01 D03 D81 D83 (search for similar items in EconPapers)
Pages: 38 pages
Date: 2019-07, Revised 2019-07
New Economics Papers: this item is included in nep-exp and nep-upt
Note: This is a revised version of WP 2017-02
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Related works:
Journal Article: Preference discovery (2020)
Working Paper: Preference Discovery (2018)
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